Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752790Ab3HAIMY (ORCPT ); Thu, 1 Aug 2013 04:12:24 -0400 Received: from mail.skyhub.de ([78.46.96.112]:50051 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750848Ab3HAIMR (ORCPT ); Thu, 1 Aug 2013 04:12:17 -0400 Date: Thu, 1 Aug 2013 10:12:15 +0200 From: Borislav Petkov To: Aaron Lu Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, lkml , "Rafael J. Wysocki" Subject: Re: i915 backlight Message-ID: <20130801081215.GB3448@nazgul.tnic> References: <20130731162252.GC4724@pd.tnic> <20130731163623.GD4724@pd.tnic> <51F9B63F.7060509@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <51F9B63F.7060509@intel.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2082 Lines: 67 On Thu, Aug 01, 2013 at 09:13:35AM +0800, Aaron Lu wrote: > Can you please run acpi_listen and then press the Fn-Fx key, see if the > events are correctly sent out? Like this? # acpi_listen video/brightnessdown BRTDN 00000087 00000000 video/brightnessup BRTUP 00000086 00000000 video/brightnessdown BRTDN 00000087 00000000 video/brightnessup BRTUP 00000086 00000000 video/brightnessdown BRTDN 00000087 00000000 video/brightnessup BRTUP 00000086 00000000 video/brightnessdown BRTDN 00000087 00000000 video/brightnessup BRTUP 00000086 00000000 video/brightnessdown BRTDN 00000087 00000000 ^C > From the bug page: > https://bugzilla.kernel.org/show_bug.cgi?id=51231#c80 > I got the impression that both the acpi_video interface and the vendor > interface thinkpad_screen are broken. So adding this cmdline here works > suggests that either thinkpad_screen works or thinkpad vendor driver > doesn't get loaded or doesn't create that interface for some reason. > > Alternatively, if the intel_backlight interface works(highly possible), > you can use xorg.conf to specify the that backlight interface for X. > > Section "Device" > Option "Backlight" "intel_backlight" > Identifier "Card0" > Driver "intel" > BusID "PCI:0:2:0" > EndSection Yeah, that didn't work *but* manually writing to both: /sys/class/backlight/acpi_video0/brightness and /sys/class/backlight/intel_backlight/brightness works. The ranges are different, though: intel_backlight/actual_brightness:1000 intel_backlight/bl_power:0 intel_backlight/brightness:1000 intel_backlight/max_brightness:4437 intel_backlight/type:raw acpi_video0/actual_brightness:41 acpi_video0/bl_power:0 acpi_video0/brightness:41 acpi_video0/max_brightness:100 acpi_video0/type:firmware I guess I need to write me a dirty script for now ... :-) Thanks guys. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/